CN111239927A - SFP optical module - Google Patents

Abstract

The application discloses an SFP optical module, comprising: a bottom case, an upper case, a slide lock, a pull ring, a return spring, an optoelectronic part, a pressing block and a sheet metal shrapnel, and an optical module cavity formed by assembling the bottom case and the upper case is used. In order to accommodate and fix the optoelectronic part, the slide lock can be slidably installed in the bottom case, and is pushed forward by the pull ring to push up the shrapnel lock locked in the metal cage on the upper case, so that the optical module is unlocked, and then moved to the upper case. Pull the pull ring outside to make the optical module exit the metal cage. Based on the SFP optical module provided by the present application, the optoelectronic part can be stably installed and accommodated in the cavity of the optical module under the condition of occupying a smaller space; the optoelectronic part, the LC optical fiber connector and the electrical connector in the host device are all The docking is stable; the optical module is well locked and unlocked in the metal cage; the installation and disassembly of the bottom case, the upper case, the slide lock, the pull ring, the return spring, the optoelectronic part, the pressing block and the sheet metal shrapnel are convenient and fast; the bottom case, Sliding locks, pull rings and return springs can be reused to save costs.

Description

An SFP optical module

technical field

The invention relates to the technical field of optical communication, in particular to an SFP optical module.

Background technique

The steady development of the global telecommunications industry and the steady growth of broadband users have laid a solid foundation for the development of the optical communication industry. With the continuous improvement of global bandwidth demand and the expansion of application fields of data center, security monitoring and optical communication industry, optical fiber broadband access has become the mainstream communication mode. Driven by the popularity of terminals such as smartphones and applications such as video and cloud computing, telecom operators continue to invest in the construction and upgrade of mobile broadband and fiber-optic broadband networks, and the scale of investment in optical communication equipment has further expanded.

The rapid development of the optical communication industry has also driven the upgrading of optical modules. In today's increasingly fierce market competition environment for optical communications, communication equipment has a higher and higher demand for reducing equipment size and increasing interface density. In order to meet this demand, optical modules are also developing in the direction of highly integrated small packages. There are more and more high-cost optical modules, complex structures, and high requirements for optoelectronic parts, which brings more challenges to enterprises and users. Heavy economic cost, so a simple structure and low cost optical module is needed to meet the needs of some enterprises and users. Therefore, there is a need for an optical module, which can make the optoelectronic part stably accommodated in the optical module cavity, and the LC optical fiber connector (Lucent Connector or LocalConnector, Lucent connector) can be smoothly inserted into the optical module or unlocked to carry out the optical signal. The gold finger of the functional circuit board in the optical module can be firmly inserted and connected to the electrical connector in the host device to transmit and receive electrical signals; the optical module shell and the optoelectronic part are assembled easily and quickly; The cost of the module is low.

SUMMARY OF THE INVENTION

The embodiment of the present invention aims to provide an optical module with a simple structure and low cost, so that the optoelectronic devices and functional circuit boards of the optical module are stably installed in the structural cavity of the optical module, and the LC optical fiber connector is inserted and locked in the optical module. The optical fiber port of the module is connected with TOSA (Transmitting Optical Sub-Assembly, optical transmitting assembly) and ROSA (Receiving Optical Sub-Assembly, optical receiving assembly) for signal transmission, and the gold fingers of the functional circuit board in the optical module are firmly plugged and connected to the optical module. The electrical connector in the host device transmits and receives electrical signals.

In order to achieve the above purpose, an embodiment of the present invention provides an SFP (10Gb Small Form-factor Pluggable, 10Gb Small Form-factor Pluggable) optical module, including: a bottom case, an upper case, a slide lock, a pull ring, and a return spring , Optoelectronic part, pressing block and sheet metal shrapnel, the optical module cavity formed by the assembly of the bottom shell and the upper shell is used to accommodate and fix the optoelectronic part, and the slide lock can be slidably installed in the bottom shell and advance under the push of the pull ring Lift up the shrapnel lock in the metal cage locked on the upper shell to unlock the optical module, and then pull the pull ring outward to make the optical module exit the metal cage.

The bottom shell is symmetrically provided with upper shell buckle protrusions and sheet metal shrapnel buckle protrusions on both sides of the shell, a chute and a stop surface are arranged at one end of the shell, and a spring groove and a rotation hole are also symmetrically arranged. With the optical fiber port, there is a limit surface at the other end of the casing. The chute is a through hole of the chute at the front end of the bottom shell, providing a smooth sliding path for the slide lock. The plane of the front end of the bottom case is on the same plane as the chute, the spring groove is a cylindrical blind hole provided on both sides of the chute for accommodating the return spring, and the spring groove is The inner diameter is larger than the outer diameter of the return spring, the return spring can move freely in the spring groove, the rotation hole is used for clamping the pull ring, the optical fiber port is provided with a locking surface, and the clamping The locking surface is matched with the LC optical fiber connector, and the LC optical fiber connector is locked in the optical fiber port to connect the TOSA and ROSA in the optoelectronic part. The gold fingers in the functional circuit board of the module are in good contact with the electrical connectors in the host device;

The upper shell is provided with upper shell snap holes, arc protrusions and snapping protrusions symmetrically on both sides of the shell, and a lock head is arranged on the upper surface of the shell, and the upper shell snap holes snap on the The upper shell is snapped on the protrusion, so that the upper shell and the bottom shell are assembled and fixed together to form an optical module cavity, and the circular arc protrusion cooperates with the metal cage, so that the optical module can be stably inserted in the optical module. In the metal cage, the pressing protrusion is used for pressing the functional circuit board, and the lock head is a triangular protrusion arranged on the upper surface of the upper shell, and has a locking surface for the elastic piece in the metal cage to lock and lock, The shrapnel lock is locked on the locking surface, so that the optical module is locked in the metal cage;

The slide lock is provided with a force-receiving part, an unlocking part, an installation column and a positioning column, and the pull ring exerts force on the force-receiving part to push the slide lock in the chute to overcome the force of the return spring. The elastic force slides forward; the unlocking part is a wedge-shaped body arranged on both sides of the front end of the sliding lock. When the sliding lock slides forward, the wedge-shaped body pushes the elastic piece lock away from the lock head to complete the The unlocking of the optical module; the sliding lock encapsulates the return spring in the spring groove through the installation cylinder and the positioning cylinder arranged on both sides of the slide lock;

The pull ring is provided with a rotating shaft, a force-applying protrusion, a handle, a cantilever and a sleeve, and the rotating shaft is clamped in the rotating hole of the bottom case; the force-applying protrusion is arranged on the pull The U-shaped protrusion in the middle of the ring, the force-applying protrusion is in close contact with the force-receiving part and exerts force on the force-receiving part, and the sliding lock can slide forward to complete the unlocking by means of the rotation of the pull ring. , and by means of the reset spring, the slide lock can slide backward to complete the reset of the slide lock and the pull ring. When the pull ring rotates to the unlocked position and then continues to rotate, the force-applying protrusion Against the stop surface, the rotation force of the pull ring is transmitted to the stop surface by the force-applying protrusion, so as to stop the rotation of the pull ring and prevent the pull ring from being damaged due to excessive rotation. The handle provides a pulling force to rotate the pull ring under the action of an external force, and the cantilever forms a closed frame with the rotating shaft, the force-applying protrusion and the handle, and provides torque for the rotation of the rotating shaft. The sleeve is a circular cylindrical body made of plastic material, which is fixed on the hand-held part, and is made of different colors to identify different working wavelengths of the optical module;

The optoelectronic part includes TOSA, ROSA and a functional circuit board. The TOSA and ROSA are all provided with pins. The functional circuit board is provided with a solder joint at one end, a gold finger at the other end, and positioning on both sides. groove, the pins are welded on the solder joints, so that the TOSA, ROSA and the functional circuit board are welded into an integral part to become the optoelectronic part, and the TOSA converts the electrical signals in the functional circuit board into The optical signal is transmitted to the LC optical fiber connector to communicate with the remote device. The ROSA converts the optical signal received by the LC optical fiber connector from the remote device into an electrical signal and transmits it to the functional circuit board. The gold finger is inserted. The electrical connector in the host device performs electrical signal transmission between the optical module and the host device;

The pressing block is provided with a circular arc groove and a boss, the circular arc groove is used to press the TOSA and ROSA, and the boss is in contact with the inner surface of the upper shell, so that the pressing block is stable to the optical module. in the cavity;

The sheet metal shrapnel is provided with sheet metal shrapnel buckle holes symmetrically on both sides, and a shrapnel is arranged symmetrically on the bottom surface, and the sheet metal shrapnel buckle holes are buckled on the sheet metal shrapnel buckle protrusions, so that the The sheet metal shrapnel is installed and fixed on the bottom case, and the shrapnel provides elastic force, so that the optical module is stably locked in the metal cage, and acts as an auxiliary elastic force when the optical module is unlocked.

In the above-mentioned SFP optical module, the bottom case is also provided with a positioning protrusion, a lower positioning surface, a clamping block, a logo, a pointer plate, a direction groove and a label groove, and the positioning protrusion cooperates with the positioning groove to realize all the functions. The functional circuit board is fixed in the front and rear of the optical module cavity, and the lower positioning surface cooperates with the pressing protrusion in the upper shell to realize the upper and lower fixing of the functional circuit board in the optical module cavity. , the block is used for positioning the TOSA and ROSA, and cooperates with the arc groove to prevent the TOSA and ROSA from being fixed in the cavity of the optical module, and the logo is used to identify the company LOGO and the date of opening the mold , the pointer plate is used to indicate the production and processing date of the optical module, the direction slot is an arrow-shaped groove set on the outer surface of the bottom case, used to indicate the reception and emission of optical signals, the label slot It is a rectangular groove arranged on the outer surface of the bottom shell for sticking labels.

The above-mentioned SFP optical module, the optical module further includes a dust plug, which is inserted into the optical fiber port, protects the TOSA and the ROSA when the optical module is not in a working state, and is provided with Anti-slip bumps and LOGO bumps. The anti-slip bumps are used to increase the friction with fingers when pulling out the dust plugs from the optical module, so that the dust plugs can be pulled out smoothly. The LOGO bumps are used for It is used to identify the LOGO of the production company of the optical module.

Based on the SFP optical module provided by the present application, the optoelectronic part of the optical module can be stably installed and accommodated in the cavity of the optical module under the condition of occupying a smaller space; The connectors are firmly connected; the optical module is well locked and unlocked in the metal cage; the installation and disassembly of the bottom case, upper case, slide lock, pull ring, return spring and sheet metal shrapnel are convenient and fast; the bottom case, slide lock, The pull ring and return spring can be reused to save cost.

Description of drawings

Fig. 1 is an embodiment exploded view one of a kind of SFP optical module of the application;

Fig. 2 is an embodiment exploded view two of a kind of SFP optical module of the application;

Fig. 3 is a kind of SFP optical module embodiment assembly effect drawing 1 of the application;

Fig. 4 is the embodiment assembly effect diagram 2 of a kind of SFP optical module of the application;

5 is a schematic diagram of an embodiment of an unlocked state of an SFP optical module of the application;

6 is a schematic diagram one of the bottom case of a kind of SFP optical module of the application;

Fig. 7 is the bottom case schematic diagram two of a kind of SFP optical module of the application;

8 is a schematic diagram one of an upper casing of a kind of SFP optical module of the application;

Fig. 9 is the upper shell schematic diagram two of a kind of SFP optical module of the application;

Fig. 10 is a slide lock schematic diagram of a kind of SFP optical module of the application;

11 is a schematic diagram of a pull ring of a kind of SFP optical module of the application;

12 is a schematic diagram of a sheet metal shrapnel of an SFP optical module of the application;

13 is a schematic diagram of a pressing block of a kind of SFP optical module of the application;

14 is a schematic diagram of an optoelectronic part of an SFP optical module of the application;

15 is a schematic diagram of a functional circuit board of an SFP optical module of the application;

FIG. 16 is a schematic diagram of an LC optical fiber connector used externally with an SFP optical module of the application;

17 is a schematic diagram of a dust plug of a kind of SFP optical module of the application;

FIG. 18 is a schematic diagram of a metal cage in which an SFP optical module of the present application is installed and used in conjunction with a host device.

The reference numerals are explained as follows:

100 bottom case

111 Upper shell snap protrusion 112 Sheet metal shrapnel snap protrusion 121 Chute 122 Stop surface 123 Spring groove 124 Rotation hole 130 Optical fiber port 131 Lock surface 140 Limit surface 141 Positioning protrusion 142 Lower positioning surface 150 Block 161 Identification 162 Pointer disc 170 Direction slot 180 Label slot

200 upper shell

210 Upper shell buckle hole 220 Arc protrusion 230 Press protrusion 240 Lock head

300 slide lock

310 Forced part 320 Unlock part 331 Installation column 332 Positioning column

400 pull ring

410 Rotation Shaft 420 Force Protrusion 430 Hand 440 Cantilever 450 Sleeve

500 return spring

600 sheet metal shrapnel

610 sheet metal shrapnel snap hole 620 shrapnel

700 briquette

710 arc groove 720 boss

800 Optoelectronics Department

810ROSA 811 pins 820TOSA 830 functional circuit boards 831 solder joints 832 positioning slots 833 gold fingers

900LC Fiber Optic Connector

910 lock face 920 unlock block 930 bullet block

1010 dust plug

1011 Anti-slip bump 1012LOGO bump

1020 metal cage

1021 shrapnel lock 1022 limited shrapnel

Detailed ways

Specific embodiments of the present application will be described in detail below. It should be noted that the embodiments described herein are for illustration only, and are not intended to limit the present application.

FIG. 1 is an exploded view of an embodiment of an SFP optical module of the application. As shown in the figure, an SFP optical module of the present embodiment includes: a bottom case 100, an upper case 200, a slide lock 300, a pull ring 400, a return spring 500, The optoelectronic part 800 , the pressing block 700 and the sheet metal spring 600 .

As shown in FIG. 2 to FIG. 5 , the optoelectronic part 800 is installed in the cavity formed by the casing structure of the optical module to form a complete optical module.

As shown in FIG. 6 and FIG. 7 , the bottom case 100 is symmetrically provided with upper case snap protrusions 111 and sheet metal spring snap protrusions 112 on both sides of the case, and a chute 121 and a stop surface are provided at one end of the case 122, a spring slot 123, a rotating hole 124 and an optical fiber port 130 are also symmetrically arranged, and a limit surface 140 is arranged at the other end of the casing. Provides a smooth sliding route, the stop surface 122 is a plane set at the front end of the bottom case 100 and is on the same plane with the chute 121, and the spring slot 123 is a cylindrical blind hole provided on both sides of the chute 121 to accommodate the return spring 500 , and the inner diameter of the spring groove 123 is larger than the outer diameter of the return spring 500, the return spring 500 can move freely in the spring groove 123, the rotation hole 124 is used for clamping the pull ring 400, and the optical fiber port 130 is provided with a locking surface 131, the locking The surface 131 cooperates with the LC optical fiber connector 900, and the LC optical fiber connector 900 is locked in the optical fiber port 130 to connect the TOSA820 and the ROSA810 in the optoelectronic part 800 to receive and transmit the optical signal of the optical module and external equipment. The limit surface 140 The gold finger 833 in the functional circuit board 830 of the optical module is in good contact with the electrical connector in the host device by being in contact with the elastic restraining sheet 1022 in the metal cage 1020 .

As shown in FIG. 8 and FIG. 9 , the upper shell 200 is symmetrically provided with upper shell snap holes 210 , arc protrusions 220 and clamping protrusions 230 on both sides of the shell, and a lock head 240 is provided on the upper surface of the shell , the upper shell buckle hole 210 is buckled on the upper shell buckle protrusion 111, so that the upper shell 200 and the bottom shell 100 are assembled and fixed together to form an optical module cavity, and the arc protrusion 220 cooperates with the metal cage 1020 to make the optical module cavity. The module is stably inserted into the metal cage 1020 , the pressing protrusion 230 is used for pressing the functional circuit board 830 , the lock head 240 is a triangular protrusion disposed on the upper surface of the upper shell 200 , and has a shrapnel lock for the metal cage 1020 The locking surface of the 1021 locking, the shrapnel lock 1021 is locked on the locking surface, so that the optical module is locked in the metal cage 1020.

As shown in FIG. 10 , the slide lock 300 is provided with a force receiving part 310 , an unlocking part 320 , a mounting column 331 and a positioning column 332 , the pull ring 400 exerts force on the force receiving part 310 , and pushes the slide lock 300 to overcome the problem in the chute 121 The elastic force of the return spring 500 slides forward; the unlocking portion 320 is a wedge-shaped body disposed on both sides of the front end of the slide lock 300. When the slide lock 300 slides forward, the wedge-shaped body pushes the shrapnel lock 1001 away from the lock head 240 to complete the unlocking of the optical module. The slide lock 300 encapsulates the return spring 500 in the spring groove 123 through the installation cylinder 331 and the positioning cylinder 332 provided on both sides of the slide lock.

As shown in FIG. 11 , the pull ring 400 is provided with a rotating shaft 410 , a force applying protrusion 420 , a hand-held portion 430 , a cantilever 440 and a sleeve 450 , and the rotating shaft 410 is clamped in the rotating hole 124 of the bottom case 100 ; The lifting 420 is a U-shaped protrusion arranged in the middle of the pull ring 400. The force applying protrusion 420 is in close contact with the force receiving part 310 and exerts force on the force receiving part 310, and the sliding lock 300 slides forward by the rotation of the pulling ring 400. The unlocking is completed, and the sliding lock 300 is slid backward with the help of the reset spring 500 to complete the reset of the sliding lock 300 and the pull ring 400. When the pull ring 400 rotates to the unlocked position and then continues to rotate, the force application protrusion 420 and the stop surface 122 On the contrary, the rotating force of the pull ring 400 is transmitted to the stop surface 122 by the force-applying protrusion 420, thereby stopping the rotation of the pull ring 400, preventing the pull ring 400 from being damaged due to excessive rotation, and the handle 430 provides a pulling force to rotate the pull ring under the action of external force. The ring 400, the cantilever 440 and the rotating shaft 410, the force-applying protrusion 420 and the hand-held part 430 form a closed frame, and provide torque for the rotation of the rotating shaft 410. The sleeve 450 is a circular cylinder made of plastic material. It is fixed on the hand-held part 430 and is made of different colors to identify different working wavelengths of the optical module.

As shown in FIGS. 14 and 15 , the optoelectronic part 800 includes TOSA820, ROSA810 and a functional circuit board 830. Both TOSA820 and ROSA810 are provided with pins 811. The functional circuit board 830 is provided with a solder joint 831 at one end and a gold finger at the other end. 833, there are positioning grooves 832 on both sides, and the pins 811 are welded on the solder joints 831, so that the TOSA820, ROSA810 and the functional circuit board 830 are welded into an integral part to become the optoelectronic part 800, and the TOSA820 connects the electrical signals in the functional circuit board 830. Convert the optical signal to the LC fiber optic connector 900 and communicate with the remote device. The ROSA810 converts the optical signal received by the LC fiber optic connector 900 from the remote device into an electrical signal and transmits it to the functional circuit board 830. The golden finger 833 is plugged in. The electrical connector in the host device transmits and receives electrical signals between the optical module and the host device.

As shown in FIG. 13 , the pressing block 700 is provided with a circular arc groove 710 and a boss 720. The circular arc groove 710 presses the TOSA820 and the ROSA810 and is fixed in the optical module cavity. 700 is fixed in the cavity of the optical module.

As shown in FIG. 12 , the sheet metal elastic piece 600 is provided with sheet metal elastic piece buckle holes 610 symmetrically on both sides, and the bottom surface is symmetrically provided with the elastic piece 620, and the sheet metal elastic piece buckle hole 610 is buckled on the sheet metal elastic piece buckle protrusion From 112 , the sheet metal shrapnel 600 is installed and fixed on the bottom case 100 , and the shrapnel 620 provides elastic force, so that the optical module is stably locked in the metal cage 1000 , and acts as an auxiliary elastic force when the optical module is unlocked.

6 and 7, the bottom case 100 is further provided with a positioning protrusion 141, a lower positioning surface 142, a clamping block 150, a logo 161, a pointer plate 162, a direction groove 170 and a label groove 180. The positioning protrusion 141 and the The positioning grooves 831 in the functional circuit board 830 cooperate to realize the front and rear fixing of the functional circuit board 830 in the optical module cavity. The upper and lower parts of the body are fixed. The clamping block 150 is used to locate the TOSA820 and ROSA810, and cooperates with the arc groove 710 in the pressing block 700 to make the TOSA820 and ROSA810 firmly installed in the optical module cavity. The logo 161 is used to identify the company LOGO and mold opening. Date, the dial 162 is used to indicate the date of production and processing of the optical module, the direction slot 170 is an arrow-shaped groove provided on the outer surface of the bottom case 100, and is used to describe the reception and transmission of optical signals, and the label groove 180 is provided in the bottom case. 100 Rectangular grooves on the outer surface for sticking labels.

As shown in FIG. 17 , the optical module further includes a dust plug 1010. The dust plug 1010 is inserted into the optical fiber port 130 to protect the TOSA820 and ROSA810 when the optical module is not working, and is provided with anti-slip bumps 1011 and LOGO bumps. 1012, the anti-skid protrusion 1011 is used to increase the friction force with fingers when pulling out the dust plug 1010 from the optical module, so as to smoothly pull out the dust plug 1010, and the LOGO protrusion 1012 is used to identify the LOGO of the production company of the optical module.

With reference to FIGS. 4 , 16 and 18 , the use process of an SFP optical module in this embodiment will be described. The optical module is inserted into the metal cage 1020 in the host device, and when the shrapnel lock 1021 is locked on the lock head 240 , the limiting surface 140 is in contact with the elastic limiting sheet 1022, the optical module is locked in the host device, the gold finger 833 is in contact with the electrical connector in the host device, and then the LC optical fiber connector 900 is inserted into the optical fiber port 130 to connect TOSA320, ROSA310, The locking surface 910 is in contact with the locking surface 131, the LC optical fiber connector 900 is locked in the optical fiber port 130, and the optical module enters the working state at this time; Press the elastic block 930 with your fingers to lower the unlocking block 920 until the locking surface 910 is separated from the locking surface 131 , pull out the LC fiber optic connector 900 , and then apply a pulling force on the handle 430 of the pull ring 400 to rotate the pull ring 400 . The pull ring 400 rotates around the rotation axis 410 . During the transfer of the pull ring 400, the force-applying protrusion 420 pushes the slide lock 300 to slide forward, and the wedge-shaped body of the unlocking portion 320 pushes up the shrapnel lock 1021 locked on the lock head 240, so that the optical module is unlocked in the metal cage 1020 , at this time, the pull ring 400 rotates to the limit position, the force application protrusion 420 is in contact with the stop surface 122, and the rotation force of the pull ring 400 is transmitted to the stop surface 122 through the force application protrusion 420 (as shown in FIG. 5), so that the The pull ring 400 stops rotating to prevent the pull ring 400 from being damaged by excessive rotation. At this time, the pull ring 400 is pulled outward, and the optical module exits the metal cage 1020; after the optical module is unlocked and pulled out of the metal cage 1020, the pull ring acts on the pull ring 1020. The external force on the 400 disappears, and the return spring 500 in the compressed state in the spring groove 121 begins to release the restoring elastic force due to the external force, thereby pushing the slide lock 300 to slide backwards to return to its original position, thereby also driving the pull ring 400 to return to its original position.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. It should be understood that the terms used are descriptive and exemplary, rather than restrictive. Since the application may be embodied in various forms without departing from the spirit or essence of the application, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but are to be construed broadly within the spirit and scope defined by the appended claims Therefore, all changes and modifications that come within the scope of the claims or their equivalents should be covered by the appended claims.

Claims (3)

1. An SFP optical module, comprising: a bottom shell, an upper shell, a slide lock, a pull ring, a return spring, a photoelectric part, a pressure block and a sheet metal shrapnel, and an optical module cavity formed by assembling the bottom shell and the upper shell is used to accommodate And fix the optoelectronic part, the slide lock can be slidably installed in the bottom case, and under the push of the pull ring, push up the shrapnel lock in the metal cage locked on the upper case, so that the optical module is unlocked, and then pulled out The pull ring allows the optical module to exit the metal cage. It is characterized in that, The bottom shell is symmetrically provided with upper shell buckle protrusions and sheet metal shrapnel buckle protrusions on both sides of the shell, a chute and a stop surface are arranged at one end of the shell, and a spring groove and a rotation hole are also symmetrically arranged. With the optical fiber port, there is a limit surface at the other end of the casing. The chute is a through hole of the chute at the front end of the bottom shell, providing a smooth sliding path for the slide lock. The plane of the front end of the bottom case is on the same plane as the chute, the spring groove is a cylindrical blind hole provided on both sides of the chute for accommodating the return spring, and the spring groove is The inner diameter is larger than the outer diameter of the return spring, the return spring can move freely in the spring groove, the rotation hole is used for clamping the pull ring, the optical fiber port is provided with a locking surface, and the clamping The locking surface is matched with the LC optical fiber connector, and the LC optical fiber connector is locked in the optical fiber port to connect the TOSA and ROSA in the optoelectronic part. The gold fingers in the functional circuit board of the module are in good contact with the electrical connectors in the host device; The upper shell is provided with upper shell snap holes, arc protrusions and snapping protrusions symmetrically on both sides of the shell, and a lock head is arranged on the upper surface of the shell, and the upper shell snap holes snap on the The upper shell is snapped on the protrusion, so that the upper shell and the bottom shell are assembled and fixed together to form an optical module cavity, and the circular arc protrusion cooperates with the metal cage, so that the optical module can be stably inserted in the optical module. In the metal cage, the pressing protrusion is used for pressing the functional circuit board, and the lock head is a triangular protrusion arranged on the upper surface of the upper shell, and has a locking surface for the elastic piece in the metal cage to lock and lock, The shrapnel lock is locked on the locking surface, so that the optical module is locked in the metal cage; The slide lock is provided with a force-receiving part, an unlocking part, an installation column and a positioning column, and the pull ring exerts force on the force-receiving part to push the slide lock in the chute to overcome the force of the return spring. The elastic force slides forward; the unlocking part is a wedge-shaped body arranged on both sides of the front end of the sliding lock. When the sliding lock slides forward, the wedge-shaped body pushes the elastic piece lock away from the lock head to complete the The unlocking of the optical module; the sliding lock encapsulates the return spring in the spring groove through the installation cylinder and the positioning cylinder arranged on both sides of the slide lock; The pull ring is provided with a rotating shaft, a force-applying protrusion, a handle, a cantilever and a sleeve, and the rotating shaft is clamped in the rotating hole of the bottom case; the force-applying protrusion is arranged on the pull The U-shaped protrusion in the middle of the ring, the force-applying protrusion is in close contact with the force-receiving part and exerts force on the force-receiving part, and the sliding lock can slide forward to complete the unlocking by means of the rotation of the pull ring. , and by means of the reset spring, the slide lock can slide backward to complete the reset of the slide lock and the pull ring. When the pull ring rotates to the unlocked position and then continues to rotate, the force-applying protrusion Against the stop surface, the rotation force of the pull ring is transmitted to the stop surface by the force-applying protrusion, so as to stop the rotation of the pull ring and prevent the pull ring from being damaged due to excessive rotation. The handle provides a pulling force to rotate the pull ring under the action of an external force, and the cantilever forms a closed frame with the rotating shaft, the force-applying protrusion and the handle, and provides torque for the rotation of the rotating shaft. The sleeve is a circular cylindrical body made of plastic material, which is fixed on the hand-held part, and is made of different colors to identify different working wavelengths of the optical module; The optoelectronic part includes TOSA, ROSA and a functional circuit board. The TOSA and ROSA are all provided with pins. The functional circuit board is provided with a solder joint at one end, a gold finger at the other end, and positioning on both sides. groove, the pins are welded on the solder joints, so that the TOSA, ROSA and the functional circuit board are welded into an integral part to become the optoelectronic part, and the TOSA converts the electrical signals in the functional circuit board into The optical signal is transmitted to the LC optical fiber connector to communicate with the remote device. The ROSA converts the optical signal received by the LC optical fiber connector from the remote device into an electrical signal and transmits it to the functional circuit board. The gold finger is inserted. The electrical connector in the host device performs electrical signal transmission between the optical module and the host device; The pressing block is provided with a circular arc groove and a boss, the circular arc groove is used to press the TOSA and ROSA, and the boss is in contact with the inner surface of the upper shell, so that the pressing block is stable to the optical module. in the cavity; The sheet metal shrapnel is provided with sheet metal shrapnel buckle holes symmetrically on both sides, and a shrapnel is arranged symmetrically on the bottom surface, and the sheet metal shrapnel buckle holes are buckled on the sheet metal shrapnel buckle protrusions, so that the The sheet metal shrapnel is installed and fixed on the bottom case, and the shrapnel provides elastic force, so that the optical module is stably locked in the metal cage, and acts as an auxiliary elastic force when the optical module is unlocked. 2. a kind of SFP optical module as claimed in claim 1, is characterized in that, described bottom case is also provided with locating protrusion, lower locating surface, clamping block, identification, pointer plate, direction groove and label groove, described The positioning protrusion cooperates with the positioning groove to realize the front and rear fixing of the functional circuit board in the optical module cavity, and the lower positioning surface cooperates with the pressing protrusion in the upper shell to realize the functional circuit board. Fixed up and down in the optical module cavity, the clamping block is used for positioning the TOSA and ROSA, and cooperates with the arc groove to prevent the TOSA and ROSA from being fixed in the optical module cavity. The logo is used to identify the company LOGO and the date of opening the mold, the pointer plate is used to describe the production and processing date of the optical module, and the direction groove is an arrow-shaped groove set on the outer surface of the bottom case, used to describe For the reception and emission of optical signals, the label groove is a rectangular groove arranged on the outer surface of the bottom case for sticking labels. 3. a kind of SFP optical module as claimed in claim 2 is characterized in that, described optical module also comprises dust-proof plug, described dust-proof plug is inserted in described optical fiber port, in described optical module non-working state It protects the TOSA and ROSA at the same time, and is provided with anti-slip bumps and LOGO bumps. The anti-slip bumps are used to increase the friction with fingers when pulling out the dust plug from the optical module, so as to pull out smoothly. The dust plug and the LOGO protrusion are used to identify the LOGO of the production company of the optical module.

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